Primary hepatic pregnancy is an extremely rare and lifethreatening condition. Fatal hemorrhage after rupture of an ectopic pregnancy is the most feared complication, and any rupture must be managed with emergency surgery. A 31-year-old patient (G6, P2) presented with amenorrhea of 8 weeks’ duration and acute onset of right upper abdominal pain. The patient was hemodynamically unstable and had diffused abdominal tenderness. Hemoglobin concentration was 6.8 g/dL. Coagulation function was normal. Serum hCG level was 23 824 mIU/mL. Pelvic ultrasonography revealed marked echogenic fluid in the pouch of Douglas, but no gestational sac was identified. The patient underwent emergency exploratory laparotomy through a lower abdominal midline incision. The abdominal cavity contained approximately 1000 mL of blood. The uterus, ovaries, and fallopian tubes were normal. Further exploration of the abdomen revealed that the hemorrhage arose from the hepatic area, and the incision was extended vertically to the upper abdomen with the assistance of a general surgeon. The active bleeding continued from a rupture in a 3.0 x 4.0-cm whitish, villiform nodule on the inferior surface of the liver. The nodule could not be removed completely because of deep implantation into the hepatic parenchyma and hilum. Hemostasis was obtained by plication of the bleeding site using absorbable sutures. Histopathologic examination of the liver nodule revealed normal chorionic villi, consistent with the diagnosis of primary hepatic pregnancy. The patient’s hCG level dropped to 10 355 mIU/mL on postoperative day 1, but rose to 11 230 mIU/mL 2 days later. Given the residual elevated hCG level and associated risk of secondary hemorrhage, transcatheter arterial chemoembolization (TACE) with intra-arterial methotrexate infusion was performed to diminish the local blood supply to the lesion and degenerate residual trophoblasts using methotrexate at the same time. The patient’s liver and renal functions were normal before TACE. A common femoral artery approach was used, and hepatic angiography showed a 2.5 x 3.0-cm mass supplied by the right hepatic artery (Fig. 1A). A mixture of 6 mL of Lipiodol (iodized oil; Guerbet, Roissy, France) and 50 mg (1 mg/kg) of methotrexate was infused via the microcatheter as close as possible to the feeding branch, followed by embolization of the feeding artery with gelatin sponge particles (0.5–1.0 mm).A methotrexate–Lipiodol emulsion was used to localize the methotrexate inside the hepatic lesion and release it slowly [1]. After embolization, X-ray examination was performed to confirm the deposition of Lipiodol inside the lesion (Fig. 1B). The patient’s recovery was uneventful. Serum hCG level decreased steadily and was undetectable 12 days after TACE. Liver and renal function tests were performed every 3 days until the patient’s hCG level normalized and remained within limits. One month later, ultrasound examination of the patient’s liver revealed no trace of the ectopic pregnancy. A previous report described slow hemorrhage from hepatic pregnancy managed by laparoscopy and postoperative administration of methotrexate [2]. In two unruptured cases, local methotrexate injection into the hepatic gestational sac was performed under direct [3] or ultrasound guidance [4]. However, additional methotrexate administration was often required for persistently elevated hCG level after surgery and caused prolonged recovery time. TACE induces an acute ischemic degeneration of trophoblasts and avoids secondary hemorrhage. Moreover, the block of blood flow to the lesion exposes the local trophoblastic mass to a higher concentration of methotrexate than intramuscular administration and prevents severe adverse effects. The combination of these two mechanisms may help accelerate the decrease in serum hCG level and shorten the time to resolution of the trophoblastic mass. TACE with intraInternational Journal of Gynecology and Obstetrics 122 (2013) 78–86